Process for the introduction of nitrogen into cast iron

Details Process for the introduction of nitrogen into cast iron Process for the introduction of nitrogen into cast iron

1988-09-30

1990-11-13

Yee, Deborah

Alloys or metallic compositions

Ferrous

1.7 percent or more carbon containing

75526, 75533, 75539, C22C 3308

Patent

active

049700510

ABSTRACT:
The present invention provides an agent for the introduction of nitrogen into cast iron, wherein it contains or consists of at least 50% by weight of at least one nitrogen-containing compound with an N--C--N structure and/or a mixture of calcium cyanamide with nitrides of silicon, ferrosilicon, manganese and chromium.
The present invention also provides a process for the introduction of nitrogen into cast iron using this agent.

REFERENCES:
patent: 3322530 (1967-05-01), Nakamura
patent: 3977868 (1976-08-01), Nakae et al.
patent: 4560409 (1985-12-01), Goldberger et al.
patent: 4832739 (1989-05-01), Meichsner et al.
Matsui et al., Nitrogen Content and Defects of Grey Cast Iron Castings, CA(106)(24): 199867y, 1986.

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